Editor’s Note: An earlier ABC News broadcast report suggested that a Jim Holmes of a Colorado Tea Party organization might be the suspect, but that report was incorrect. ABC News and Brian Ross apologize for the mistake, and for disseminating that information before it was properly vetted.

Today’s column provides another primer for the amnesia-wracked blamestream media on just how widespread the Blame Righty meme has been over the past two years. Regular readers of this blog are well aware of this expanding litany outlined below. You are also well aware of the cunning ability of the Left to hinder exposure of this sordid history by accusing its chroniclers and whistle-blowers of “playing the victim.” Sarah Palin is the most prominent conservative to encounter this tactic, but she is by no means the first conservative public figure to experience it. Kabuki outrage over her use of the term “blood libel” is an intended distraction from the history outlined below that undergirds her message. The political speech suppressors have honed their craft long and well.

The solution isn’t to “tone it down” and turn the other cheek, but to confront them forcefully with the facts — and to fight back unapologetically against insidious efforts to diminish the law-abiding, constitutionally-protected, peaceful, vigorous political speech and activism of the Right in the name of repressive “civility.”

For the past two years, Democrat officials, liberal activists, and journalists have jumped to libelous conclusions about individual shooting sprees committed by mentally unstable loners with incoherent delusions all over the ideological map. The White House now pledges to swear off “pointing fingers or assigning blame.” Alas, the Obama administration’s political and media foot soldiers have proven themselves incapable of such restraint.

In April 2009, a disgruntled, unemployed loser shot and killed three Pittsburgh police officers in a horrifying bloodbath. The gunman, Richard Poplawski, was a dropout from the Marines who threw a food tray at a drill instructor and had beaten his girlfriend. Was this deranged shooter who pulled the trigger to blame? Nope. Despite evidence that Poplawski’s homicidal, racist tendencies manifested themselves years before Obama took office, lefty publications asserted that the real culprits of the spree were the “heated, apocalyptic rhetoric of the anti-Obama forces” (according to mainstream liberal Atlantic Monthly pundit Andrew Sullivan), along with Fox News and Glenn Beck (according to mainstream liberal journalist Steve Benen of the Washington Monthly online).

President Obama wisely counseled the nation this week at the Tucson massacre memorial that “Bad things happen, and we must guard against simple explanations in the aftermath.” But as the progressive Left’s smear-stained recent history shows, criminalizing conservatism is a hard habit to break.